Following are a number of back-translations as well as a sample translation for translators of Ecclesiastes 7:20:

• Kupsabiny: “There is not one person in the world who is righteous and stands on the truth who has never done a sin.” (Source: Kupsabiny Back Translation)
• Newari: “There is not a righteous person in the world,
  who does everything in the right way and never sins.” (Source: Newari Back Translation)
• Hiligaynon: “There is no[intensifier] person here on earth who always does righteous (acts) and never sins.” (Source: Hiligaynon Back Translation)
• English: “There is no one in this world who always does what is right
  and who never sins.” (Source: Translation for Translators)